I think to some extent it depends on the name, but I'm trying it out with the K 2-syllable last names of friends that I can think of, and it's usually fine. I think if there's a W sound in the K name or the K name also ends in N, it's harder, but otherwise it's OK. Quinn is a nice name!

I think it's probably fine, but like PP said it may depend on the actual name. A Kw- sound at the beginning would sound alliterative, and an -n sound at the end would sound rhyme-y. Other than those 2 things, I can't think of any other reason why it wouldn't work.